S-Works, they build the high end stuff. Its basically a Stumpjumper with nicer tubing. FWIW a 92 Stumpjumper Comp is about 26lbs, these were about 23lbs according to a review in a magazine I have from the era. Frame weight was lower, and it also had nicer parts.

That frame is a 21", which is for a very tall person. I hope you are a tall person.